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authorKonstantin Khlebnikov <koct9i@gmail.com>2014-06-04 16:10:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 16:54:12 -0700
commit226b4ccdcb6371645c25ec99b59bfde65987318c (patch)
treeaa39df4a0dde94260b9ee2c0e61318c038a8738d /init/Kconfig
parent1a501907bbea8e6ebb0b16cf6db9e9cbf1d2c813 (diff)
downloadlinux-linaro-stable-226b4ccdcb6371645c25ec99b59bfde65987318c.tar.gz
mm/process_vm_access: move config option into init/Kconfig
CONFIG_CROSS_MEMORY_ATTACH adds couple syscalls: process_vm_readv and process_vm_writev, it's a kind of IPC for copying data between processes. Currently this option is placed inside "Processor type and features". This patch moves it into "General setup" (where all other arch-independed syscalls and ipc features are placed) and changes prompt string to less cryptic. Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Christopher Yeoh <cyeoh@au1.ibm.com> Cc: Davidlohr Bueso <davidlohr@hp.com> Cc: Hugh Dickins <hughd@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/Kconfig')
-rw-r--r--init/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 0a2f09a80e90..ce034ad4a162 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -261,6 +261,16 @@ config POSIX_MQUEUE_SYSCTL
depends on SYSCTL
default y
+config CROSS_MEMORY_ATTACH
+ bool "Enable process_vm_readv/writev syscalls"
+ depends on MMU
+ default y
+ help
+ Enabling this option adds the system calls process_vm_readv and
+ process_vm_writev which allow a process with the correct privileges
+ to directly read from or write to to another process's address space.
+ See the man page for more details.
+
config FHANDLE
bool "open by fhandle syscalls"
select EXPORTFS